Steam-pressure cooker and canner attachment



W. M. LADD. STEAM PRESSURE COOKER AND CANNER ATTACHMENT. APPLICATION FILED OCT, 13. 1919.

Patented Dec. 21, 1920.

Witnesses V and 1t more specifically tively sligh UNITED WALTER M. mm), or OMAHA, NEBRASKA.

STEAM-PRESSURE COOKER AND CANNER ATTACHMENT.

To all whom it may concern Be it known that I, WALTER M. LADD, a citizen of the United States, residin at maha, in the county of Douglas'and tate of Nebraska, have invented certain new and useful Improvements in Steam-Pressure to cooking utensils, relates to an improved attachment for a boileror cooker of previously known construction.

ne obiect of this invention is to provide an improved attachment or extension whereby the capacity of the cooking utensil may be easily and conveniently his invention relates t expense.

'A further object of the invention is toprovide an attachment or extension of this character which is especially applicable and useful in connection with a previously known boiler or cooker of improved form.

Other objects and advantages may become apparent topersons who read the following details of description in connection with the accompanying drawings in which igure 1, is a perspective view illustrating my improved attachment in place on. a cooker in readiness for use.

ig. 2, is a perspective view of the main member of my improved attachment separated from the cooker.

ig. 3, is an enlarged sectional detailed view.

Referring which similar reference characters correing receptacle 1, its lid 2 and the lid-clamp 3 are of previously known construction. my invention comprises the novel form of attachment or extension 4 and the clamps 5 which secure it to the receptacle 1.

In order that the invention may be thoroughly understood, it is hereby explained that the receptacle 1 is cylindrical and is formed with an annular flange end. The lid upwardly and outwardly extending flange 7, which fits against the inner and upper surfaces of the flange 6 when the members Specification of Letters Patent. Application filed October 18, 1919. Serial No.

' the cover orsuch as operations of cooking fruit or "manufacturing the extension 4,

Patented Dec. 21; 1920.

l and 2 are used Without connection with the cylindrical attac clamp 3 comprises a spider 8 having a screw 6 of the receptacle, it may be secured thereon by placing the spider over its top so that the screw 9 rests in a central socket or depression of the lid 2. By properly turning the screw 9, the spider will be lowered until the latches 10 extend under the flange 8 and then by turning the screw 9 in the opposite direction, the latches will engage with the flange 6 and coiiperate therewith to secure lid in position on the receptacle 1;

The cooker just previously described .is adequate for ordinal y family use but in case of a family reunion, or other emergencies,

vegetables, on canning, desirable to increase the capacity and also, at times, to render the device substantially steam-tight.

in Figs. 1 and 3 of the drawugs. 11 order that the extension 1 may be very quickly, easily and securely held in its useful. position, its lower end is provided with a flange 11 which is recessed at 12 to provide a seat for a gasket 13, and a series of clamps 5 are engaged with the flanges 6 and 11, each of these clamps comprising two relatively movable jaws and a bolt 15. For the purpose of convenience and economy in its main body portion is preferably pressed, forged the fl mately steam-tight. Therefore, when the clamps 5 secure the extension 4 in place and ange 6 and is'approxi hment 4. The

When the lid 2 is on the flange the lid-clamp secures the lid in place and hollow cylindrical attachment to extend the boiling takes place in the utensil, steam is height of said cooking receptacle, a plurality compressed in the utensil and thereby raises of attaching clamps, and a gasket, said cylinthe temperature to the desired degree, it bedrical attachment having outwardly extend- 5 ing understood that the steam pressure may ing annular flanges at its upper and lower 30' be regulated by the screw 9; that is, by ends, the lower flange being fitted around loosening the screw the escape of steam is a cylindrical surface of said attachment and increased, and by tightening the screw the riveted thereto and being formed with an escape is diminished. annular seat, said gasket being fitted in said 10 A handle or bail 18 is provided and this annular seat to seal the join between said 35 may be interchangeably connected to the receptacle and attachment when the latter flanges 6 and lt. is attached, each of said attaching clamps Although I have described this embodicomprising two members secured together ment of my ll'lVcIltlOIl very specifically, it by means of a screw and enga'geable respec- 15 is not intended to limit this invention to these tively with the upper surface of the lower to exact details of description, but changes may flange of said attachment and the lower sur- I be made within the scope of the inventive face of the flange of said receptacle, the idea as claimed. screws of said attaching clamps being oper- What I claim is my invention is: atable to tighten the clamps, said lid-clamp 2Q In an extensible cooker, a cooking recepbeing engageable with the upper flange of an tacle having a hollow cylindrical upper end said attachment to secure the lid.

formed with an annular outwardly project- In testimony whereof I have hereunto set ing flange, a lid adapted to rest on said my hand. flange, a lid-clamp to engage with said flange 1 25 for securing said lid on said receptacle, a WALTER NLLADD. 

